Camargo appeared in Forbes’World’s Billionaires list last March as the 87th richest person in the world, the 4th richest person in Brazil and the country’s richest woman, with a net worth estimated at $11.5 billion. She was also the world’s oldest billionaire.

The bulk of Camargo’s fortune comes from her stake in Camargo Correa, a Brazilian private conglomerate founded by her late husband, Forbes’ “original billionaire” Sebastião Camargo, in 1939. The company, which is present in more than 20 countries and employs over 60,000 people worldwide, has operations in cement, energy and construction. It also controls São Paulo Alpargatas SA, which manufactures the world famous Havaianas flip-flops.